EP1723466B1 - Vorrichtung zum erzeugen von polychromatischem licht mit kontinuierlichem spektrum - Google Patents

Vorrichtung zum erzeugen von polychromatischem licht mit kontinuierlichem spektrum Download PDF

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Publication number
EP1723466B1
EP1723466B1 EP05736620A EP05736620A EP1723466B1 EP 1723466 B1 EP1723466 B1 EP 1723466B1 EP 05736620 A EP05736620 A EP 05736620A EP 05736620 A EP05736620 A EP 05736620A EP 1723466 B1 EP1723466 B1 EP 1723466B1
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European Patent Office
Prior art keywords
light
wavelength
radiation
optical fibre
microstructured optical
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French (fr)
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EP1723466A1 (de
Inventor
Philippe Nerin
Pierre-Alain Champert
Sébastien Fevrier
Philippe Roy
Vincent Couderc
Philippe Leproux
Ludovic Grossard
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Centre National de la Recherche Scientifique CNRS
Horiba ABX SAS
Universite de Limoges
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Centre National de la Recherche Scientifique CNRS
Horiba ABX SAS
Universite de Limoges
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/35—Non-linear optics
    • G02F1/365—Non-linear optics in an optical waveguide structure
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/33—Acousto-optical deflection devices
    • G02F1/335—Acousto-optical deflection devices having an optical waveguide structure
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/35—Non-linear optics
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/35—Non-linear optics
    • G02F1/3528—Non-linear optics for producing a supercontinuum
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/32—Photonic crystals

Definitions

  • the invention relates to the field of light sources, and more particularly the sources of white light.
  • broad spectrum white light can be generated in a variety of ways.
  • a first way is to use a source emitting directly a broad spectrum white light, such as an incandescent lamp, a quartz lamp or a xenon arc.
  • a source emitting directly a broad spectrum white light such as an incandescent lamp, a quartz lamp or a xenon arc.
  • the emission spectrum is substantially continuous, but the luminance delivered is quite low and the emission of light is isotropic, thus making it impossible to focus on very small areas as the formation of a spatially coherent beam ( or low divergence).
  • the congestion of such sources is important.
  • the lifespan of these sources is relatively short.
  • arc or incandescent sources generate a lot of heat and therefore have poor performance.
  • a second way is to parallel a large number of single-frequency laser diodes emitting photons of different wavelengths.
  • the size is relatively small, but the spectrum delivered is not continuous, the power delivered is quite low, the partition noise is relatively high and intensity variations can occur between diodes.
  • a third way is to pump a microstructured optical fiber with a single-frequency laser, such as a solid-state laser, such as a titanium-sapphire laser, operating in pulsed mode with pulses of the order of one picosecond to the femtosecond for repetition frequencies ranging from kilohertz to megahertz.
  • a single-frequency laser such as a solid-state laser, such as a titanium-sapphire laser
  • pulsed mode with pulses of the order of one picosecond to the femtosecond for repetition frequencies ranging from kilohertz to megahertz.
  • This type of source is described in particular in the JK Ranka et al, Optics Letters, vol. 25, No. 1, p. 25-27, 2000 and in the document JC Knight et al, Optics Letters, vol. 26, No. 17, p. 1356-1358, 2001 . Due to the type of laser used, such a light source is very expensive and moreover very cumbersome, thus excluding
  • a fourth way is described in the patent document WO 2005/071483 , forming part of the state of the art within the meaning of Article 54 (3) EPC. It consists in using optical pumping means for delivering radiation of two different excitation wavelengths in a microstructured fiber arranged, when it is excited by this radiation at order lengths of 532 nm and 1064 nm, to deliver a polychromatic light.
  • the object of the invention is therefore to improve the situation.
  • FIG. 1 We first refer to the figure 1 to describe a first embodiment of a device D dedicated to the generation of polychromatic light, according to the invention.
  • a device D firstly comprises an optical pump module MP responsible for delivering a radiation having at least two different excitation wavelengths ⁇ 1 and ⁇ 2, and preferably two groups of different wavelengths.
  • this optical pumping module MP could deliver photons having more than two different wavelengths or more than two groups of different wavelengths, for example three or four or more.
  • the MP optical pumping module can be realized in different ways. It can, as illustrated on the figure 2 , present themselves under the shape of a single-wavelength SL laser source coupled to frequency conversion means, for example a frequency doubler DF.
  • the laser source SL feeds the frequency doubler DF in photons (or radiation) having the first wavelength ⁇ 1, equal to 1064 nm, and the frequency doubler DF delivers on its output SMP photons (or radiation). ) at the first wavelength ⁇ 1 and photons (or radiation) at the second wavelength ⁇ 2, equal to half of ⁇ 1, or 532 nm.
  • the MP multi-wavelength optical pumping module can operate either in a pulse mode and synchronized temporally, or in a quasi-continuous or continuous mode.
  • the device D according to the invention also comprises charged light guide means GL, when they are excited by radiation having several wavelengths, delivered by the optical pumping module MP, in a light interaction regime. nonlinear material, to deliver on their output SGL a polychromatic light corresponding to a "continuum".
  • the guiding means (6C) being constituted by the microstructured optical fiber.
  • polychromatic light is meant here a light whose spectrum is of the type shown in FIG. figure 3 (first curve between the wavelengths 350 nm and 750 nm), that is to say substantially continuous, and not discretized, in terms of wavelengths ( ⁇ ) over a wide band.
  • the intensity I here in arbitrary unit
  • the intensity of the polychromatic light that is delivered by the light guiding means GL varies little over the interval between about 420 nm and about 700 nm.
  • a monomode optical fiber using a negative dispersion regime normal dispersion corresponding to a wavelength of less than 800 nm (or 0.8 ⁇ m) on the figure 4
  • the pumping by a single-frequency source gives rise to the generation of discrete Raman lines towards the high wavelengths (as illustrated on the second curve of the figure 3 which is between the wavelengths 500 nm and 700 nm).
  • No signal or a very weak signal
  • the number of generated Raman lines increases with the intensity of the injected signal.
  • the light guiding means GL have a dispersion profile comprising one or more cancellations associated with one or more chosen wavelengths ⁇ c.
  • the spectrum of the polychromatic light is distributed substantially homogeneously and continuously on both sides of the chosen wavelength ⁇ c, and therefore on both sides of the excitation wavelengths ⁇ 1 and ⁇ 2 .
  • transverse monomode refers to a particular spatial structure of the beam, characterized in that it comprises only a spatial mode regardless of the wavelength considered of the spectrum emitted.
  • the light guiding means GL are in the form of an optical fiber whose non-linear properties are a function of its structure and its dimensions.
  • An optical fiber called microstructured is used.
  • This type of optical fiber has an "opto-geometric" adjustable structure that allows a control of the dispersion profile and allows propagation over the entire transmission band of the silica, and preferably in a transverse mode singlemode propagation.
  • this type of optical fiber significantly increases the confinement of the guided electromagnetic field, thereby reducing the threshold of appearance of nonlinear phenomena responsible for spectral broadening.
  • the optical fiber GL may be an optical fiber with holes of the type illustrated in FIG. figure 5 , in a cross-sectional view.
  • This type of optical fiber is described in detail in the patent document. EP 1 148 360 .
  • This microstructured fiber consists of hollow channels CC parallel to the longitudinal axis of the optical fiber GL, placed next to each other around the core CF of the fiber, in a chosen pitch, so as to define a mesh structure (called photonic crystal), and formed in the material constituting the GF sheath surrounding the silica CF core of the optical fiber GL.
  • a photonic crystal is a forbidden photonic band structure, consisting of diffracting elements (here hollow channels CC) defining a mesh (for example square or triangular) and whose physical properties make it possible to control the propagation of the light.
  • diffracting elements here hollow channels CC
  • a mesh for example square or triangular
  • Such a structure is for example obtained by stretching in a die, as described in the book by Jean-Michel Lourtioz, "the photonic crystals", p. 324, Hermes Editions, 2003.
  • the diameter of the CF core of the GL fiber is approximately 3 ⁇ m
  • the pitch of the grating is of the order of 3 to 4 ⁇ m.
  • the efficiency of conversion of the excitation photons towards the photons of the continuum depends mainly on the peak power delivered by the optical pumping module MP, the dimensions of the core CF of the optical fiber GL and the "active" length of said fiber GL optics.
  • an optical pump module MP delivering a high power (all excitation wavelengths combined) allows the use of a shorter optical fiber (or waveguide).
  • microstructured optical fiber GL in silica, having a core 3 ⁇ m in diameter and a few meters long.
  • the spectral broadening corresponding to the generation of the broad-spectrum polychromatic light is performed here in a single pass through the microstructured optical fiber GL. But, we could foresee several passages. It is important to note that the spectral broadening is substantially independent of the sign of the chromatic dispersion of the optical fiber GL (or waveguide), which makes it possible to reduce the constraints on the optogeometric parameters of the light guiding means GL .
  • the light guiding means GL may be of the type called "polarization selection” or “polarization-maintaining” type.
  • the coupling between the output SMP of the optical pump module MP and the input EGL of the light guiding means GL can be done either directly, as in the example illustrated in FIG. figure 1 , or indirectly, as in the second embodiment illustrated on the figure 6 .
  • Direct coupling can be envisaged, in particular, when the excitation photons (or radiation) are delivered by the optical pumping module MP on an output SMP consisting of light guiding means, for example a light guide (or a light guide). wave) or a portion of optical fiber.
  • an output SMP consisting of light guiding means, for example a light guide (or a light guide). wave) or a portion of optical fiber.
  • the device D comprises coupling means MC which can be made, for example, in the form of a lens interposed between the output SMP of the optical pump module MP and the EGL input of the GL light guiding means (see FIG. figure 6 ).
  • the device D is intended to deliver a continuous polychromatic light over a broad spectrum, visible and / or ultraviolet and / or infrared.
  • it is coupled to (or includes) MF filtering means so as to filter (or select) the photons of the continuum, generated in the light guiding means GL, in order to deliver photons (or radiation) at selected wavelengths or selected portions of the continuous spectrum. This makes it possible to synthesize a custom light source.
  • any type of MF filtering means can be envisaged. However, it is advantageous for them to be integrated in the light guiding means GL, for example in the form of one (or more) Bragg grating (s) (placed in series), which is well known in the art. skilled in the art. Indeed, a Bragg grating may be defined in a terminal portion coupled to the SGL output of the light guiding means GL, or in an end portion of this SGL output, for example by a local modulation of step index and a chosen length, as schematically illustrated on the figure 1 . In this case, by judiciously choosing the structure of the Bragg grating (s), it is possible to synthesize a source emitting one or more chosen wavelengths.
  • the MF filtering means may be external to the light guiding means GL, and constitute an insert element.
  • they can for example, as illustrated on the figure 7 , being coupled to the SGL output of the light guiding means GL and having a diffraction grating RD illuminated in parallel beam and charged to diffract the light to deliver a monochromatic beam to another light guide FO, such as for example an optical fiber FO, responsible for performing spatial filtering for the spectral selection.
  • FO such as for example an optical fiber FO
  • This arrangement of simpler technology than a Bragg grating, makes it possible to produce a source that is continuously tunable in wavelength in the emission range of the polychromatic light source. The wavelength agreement is then obtained by the rotation of the diffraction grating RD.
  • the invention can be used in many fields, in particular because of the transverse coherence and the polychromicity of the light produced.
  • a first domain is the metrology of physical quantities.
  • the device D according to the invention may constitute the white light source of an optical micro-stratigraphy device, for example of the type described in the patent document. FR 2738343 .
  • a white light is transported by an optical fiber to a microscope objective which focuses it on a sample (or object).
  • the microscope objective has a chromatism chosen so as to focus all the wavelengths contained in the white light in a Z - coast.
  • the detection takes place in confocal mode with chromatic coding of the measurement axis.
  • the spectrometer makes it possible to analyze the spectrum of the light reflected by the sample and to deduce some of its characteristics, such as, for example, its position relative to the detector and the optical thicknesses of the layers that constitute it.
  • the accuracy of the measurements made depends on the temporal stability of the white light source and the photometric balance, which depends in the first place on the energy luminance (or power emitted per unit area and per unit solid angle) of the source.
  • Such characteristics are offered by the source according to the invention.
  • a device according to the invention delivering a beam having, for example, the following characteristics: core diameter of 6 ⁇ m, power of 3 mW, numerical aperture equal to 0.4, and average luminance (between 400 nm and 700 nm) equal to 200 W.mm -2 .sr -1 .
  • the light source according to the invention is 1000 times more powerful, thus reducing by a factor of 1000 the integration time for an identical signal-to-noise ratio .
  • Such time saving is particularly useful in applications related to the online control of manufacturing quality of products such as plastic films or glass or plastic packaging.
  • a second area is optical microscopy, including tomographic imaging of biological and non-biological materials.
  • the device D according to the invention may constitute the white light source of an in vivo cutaneous optical tomography device of the type described in the patent document. FR 2738140 .
  • This device constitutes a confocal microscope with longitudinal chromatic coding using a spectrophotometer multichannel analysis.
  • Such a device requires a white light source having a brightness sufficiently high to allow shooting at a video rate in a biological medium.
  • the source according to the invention is therefore particularly well suited to this type of device.
  • optical tomography is said to be coherent, as in the case of the OCT technique for "Optical Coherence Tomography", which requires a broadband source with a low temporal coherence.
  • This OCT technique is used in high-resolution biopsies.
  • the spectral width of the source according to the invention makes it possible to avoid the simultaneous use of several sources centered on various wavelengths.
  • a third domain is three-dimensional microscopy, especially in applications such as surface profilometry or examination of biological (eg blood) cells.
  • a fourth domain includes phase contrast analysis and strioscopy, for which it is necessary to have a light source having a high spatial coherence for illuminating a phase object in parallel light.
  • an image of a light source is formed in the focal plane of an imaging optics. This image is stopped (strioscopy) or out of phase (phase contrast) with respect to the light diffracted by the observed object. The image of the object, resulting from the diffraction, is observed in the conjugate plane.
  • This type of application requires a light source with punctuality and high gloss, which are two characteristics of the sources according to the invention.
  • These analyzes are used in particular in optical microscopy in the field of biology, for example for the observation of weakly refractive cells, as well as in metrology, for example for measuring micro surface roughness on precision optics.
  • These include measurement techniques using structured light projection, and Shack-Hartmann type wavefront analyzers operating in white light and for which the laser granularity noise (or "speckle" effect) can to be eliminated.
  • the invention is an important advantage over a monochromatic laser.
  • a fifth domain is interferometry, especially that called low coherence. It is indeed possible to use a source according to the invention to control very high optics accuracy, such as those used in ultraviolet photolithography, as described in particular in the A. Courteville, "New Methods and Techniques for Industry", SFO Symposium, Belfort 17-21 November 2003 . It is also possible to use a source according to the invention in optical fiber interferometers of the type described in the patent document. US 2002/085208 or in the field of biological and / or chemical sensors of the type described in the document " Optical biosensors. Monitoring studies of glycopeptide antibiotic fermentation using white light interference ", Analytical Chemistry, Volume 73, Number 17, September 1, 2001 .
  • a sixth area is the surveillance or observation of buildings or monuments. It has been proposed, for example, in the F. Figuera et al, "Evaluation of white light Fabry-Perot interferometry fiber-optic gages for small strains", Experimental Techniques, p. 31-36, July / August 2003 , to couple a white light source to a Fabry-Perot cavity to form a stress sensor intended, in particular, for auscultation of civil engineering works. This type of application requires a high reliability of the stress measurement system, which mainly depends on the lifetime of the white light sources of the various sensors (sometimes a hundred connected in parallel).
  • the source according to the invention makes it possible to satisfy numerous spectral and energy constraints imposed by multiplexed sensor networks using optical fibers coupled to Bragg gratings, as described in the document A. Othonos, "Fiber bragg gratings: Fundamentals and applications in telecommunications and sensing", Artech House Optoelectronics Library, Hardcover, June 1999 .
  • a seventh area is LIDAR observation (for "Light Detection And Ranging”). It has been proposed, in particular in the patent document US 5,394,243 , a LIDAR measuring device for measuring the wind speed at low altitude (typically between 10 m and 100 m). Such a device comprises a broad-spectrum light source, filtered in transmission as in reception by a Fabry-Perot interferometer. Spectroscopy of the light scattered by the atmosphere makes it possible to determine the Doppler effect and to deduce a velocity vector, in particular when the light beam is scanned. conical.
  • the source according to the invention is therefore particularly well suited to this type of application since it allows a long-range focusing, it offers a great power in a wide range of wavelengths and a noise significantly lower than the partition noise offered by the multimode laser diodes currently used. More generally, the invention is particularly well suited to the spectroscopy of solids, liquids and gases. In particular, the invention makes it possible to envisage an atmospheric LIDAR type application for the detection and the determination of gaseous species, as well as a multi-pass measurement cell application, which is described in particular in the document " Two-mirror multipass absorption cell ", Applied Optics, Vol 20, No. 6, 15 March 1981 .
  • An eighth area is the spectroscopy of microscopic objects, which requires the focusing of the excitatory light in a very small spot.
  • the source according to the invention can emit in the ultraviolet, the visible and the infrared and can be easily focused, it is therefore particularly well suited to spectroscopic analyzes of microscopic objects such as natural chromophores of cells. It is thus possible to study the optical properties of erythrocytes at the cellular or subcellular level.
  • the high power offered by the source according to the invention also allows a use in the field of flow microspectroscopy, in particular for the study of the coloration phenomena obtained in the diffraction diagrams described in the book Kerker, "The scattering of light and other electromagnetic radiation", p. 396, 1969 .
  • a ninth area is the transmission of images, possibly holographic, using optical fibers.
  • This information transmission is carried out using a spectral modulation technique which requires a substantially constant spectral distribution of light over a wide range of wavelengths and under high power so as to compensate for intrinsic losses to transmission optical fibers. Because of its characteristics, the source according to the invention is therefore particularly well suited to this application.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
  • Spectrometry And Color Measurement (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Claims (12)

  1. Vorrichtung zum Erzeugen eines polychromatischen Lichtes, mit:
    - Einrichtungen zum optischen Pumpen (MP), die eine Laserquelle (SL) mit einem Frequenzumrichter (DF) aufweisen, um eine Strahlung bei einer ersten und einer zweiten Wellenlänge von 1064 bzw. 532 Nanometer zu liefern,
    - einer mikrostrukturierten optischen Faser (GL), die ein Verteilprofil aufweist, mit einer Annulierungswellenlänge zwischen der ersten und der zweiten Wellenlänge, und ausgebildet ist, um, im Fall der Anregung durch die Strahlung in einem nicht linearen Anregungszustand, an einem Ausgang (SGL) ein polychromatisches Licht zu liefern, wobei das Streuungsprofil der mikrostrukturierten optischen Faser vom selben Vorzeichen verbleibt zwischen der Annulierungswellenlänge, die ungefähr 800 Nanometer und 1800 Nanometer beträgt.
  2. Vorrichtung nach Anspruch 1, bei der die mikrostrukturierte optische Faser vom monomoden Typ ist, derart, dass sie an ihrem Ausgang ein quermonomodes polychromatisches Licht liefert.
  3. Vorrichtung nach Anspruch 1 oder 2, bei der die optischen Pumpeinrichtungen (MP) ausgebildet sind, um die Bestrahlung auf impulsartige und zweitweise synchronisierte Weise zu liefern.
  4. Vorrichtung nach Anspruch 1 oder 2, bei der die optischen Pumpeinrichtungen (MP) ausgebildet sind, um die Strahlung auf kontinuierliche oder quasi kontinuierliche Weise zu liefern.
  5. Vorrichtung nach Anspruch 1, bei der der Frequenzumwandler (DF) ausgebildet ist in Form von mindestens einem Frequenzverdoppler, der in der Lage ist, die Strahlung mit der zweiten Anregungswellenlänge (λ2) zu liefern, die zweimal kleiner ist als die erste Anregungswellenlänge (λ1).
  6. Vorrichtung nach Anspruch 1, bei der die mikrostrukturierte optische Faser gewählt wird aus einer Gruppe, die wenigstens eine Lochfaser und eine Photonenfaser aufweist.
  7. Vorrichtung nach einem der Ansprüche 1 bis 6, bei der die mikrostrukturierte optische Faser vom Typ genannt mit Polarisationswahl ist.
  8. Vorrichtung nach einem der Ansprüche 1 bis 7, bei der die mikrostrukturierte optische Faser vom Typ genannt mit Beibehalten der Polarisation ist.
  9. Vorrichtung nach einem der Ansprüche 1 bis 8, mit Filtereinrichtungen (MF), die in der Lage sind, gewisse der Wellenlängen der Strahlung unterhalb der mikrostrukturierten optischen Faser zu filtern.
  10. Vorrichtung nach Anspruch 9, bei der Filtereinrichtungen (MF) wenigstens ein Bragg-Netz aufweisen.
  11. Vorrichtung nach einem der Ansprüche 1 bis 10, mit Kupplungseinrichtung (MC), die derart ausgestaltet sind, dass sie die optischen Pumpeinrichtungen (MP) mit einem Eintritt (EGL) der mikrostrukturierten optischen Faser kopppeln.
  12. Verwendung einer Vorrichtung (D) nach einem der vorhergehenden Ansprüche in einem Bereich gewählt aus einer Gruppe mit wenigstens der Metrologie von physischen Größen, der optischen Mikroskopie und insbesondere der Bild-Tomographie und der dreidimensionalen Mikroskopie, der Spektroskopie, der medizinischen Musteranalyse und insbesondere der Durchflusszytometrie, der medizinischen Holografie, der Bildübertragung und insbesondere der Übertragung holografischer Bilder, der Teilchenmanipulation von mikroskopischer Größe und submikroskopischer Größe und der Interferometrie.
EP05736620A 2004-03-12 2005-03-08 Vorrichtung zum erzeugen von polychromatischem licht mit kontinuierlichem spektrum Active EP1723466B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0402589A FR2867574B1 (fr) 2004-03-12 2004-03-12 Dispositif de generation d'une lumiere polychromatique a spectre continu
PCT/FR2005/000550 WO2005098527A1 (fr) 2004-03-12 2005-03-08 Dispositif de generation d'une lumiere polychromatique a spectre continu

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EP1723466A1 EP1723466A1 (de) 2006-11-22
EP1723466B1 true EP1723466B1 (de) 2008-11-05

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US (1) US7768691B2 (de)
EP (1) EP1723466B1 (de)
JP (1) JP4898657B2 (de)
KR (1) KR20070085077A (de)
CN (1) CN100418003C (de)
AT (1) ATE413627T1 (de)
DE (1) DE602005010835D1 (de)
ES (1) ES2317227T3 (de)
FR (1) FR2867574B1 (de)
WO (1) WO2005098527A1 (de)

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EP2135134A1 (de) * 2006-12-08 2009-12-23 Koheras A/S Tiefblaue erweiterte superkontinuum-lichtquelle
JP4752856B2 (ja) * 2008-03-14 2011-08-17 住友電気工業株式会社 広帯域光源
WO2009126888A2 (en) * 2008-04-10 2009-10-15 Services Petroliers Schlumberger Method for characterizing a geological formation traversed by a borehole
US8725477B2 (en) 2008-04-10 2014-05-13 Schlumberger Technology Corporation Method to generate numerical pseudocores using borehole images, digital rock samples, and multi-point statistics
FR2935845B1 (fr) 2008-09-05 2010-09-10 Centre Nat Rech Scient Cavite optique amplificatrice de type fabry-perot
US8311788B2 (en) 2009-07-01 2012-11-13 Schlumberger Technology Corporation Method to quantify discrete pore shapes, volumes, and surface areas using confocal profilometry
FR2947107B1 (fr) * 2009-06-19 2011-08-26 Centre Nat Rech Scient Systeme d'emission d'une lumiere polychromatique a sous-cavites couplees
US8305682B2 (en) * 2009-09-16 2012-11-06 The Board Of Trustees Of The University Of Illinois Optical frequency up-conversion of femtosecond pulses into targeted single bands in the visible and ultraviolet
FR2951878B1 (fr) 2009-10-22 2011-11-25 Centre Nat Rech Scient Systeme de generation d'une lumiere polychromatique en regime continu par fibre optique microstructuree dopee
CN102012380A (zh) * 2010-09-21 2011-04-13 上海大学 一种检测有害重金属元素在细胞内分布的方法
ES2742033T3 (es) 2012-06-01 2020-02-12 Nkt Photonics As Una fuente de luz de supercontinuo, un sistema y un método de medición
TWI474060B (zh) * 2013-06-18 2015-02-21 Nat Univ Tsing Hua 超連續光譜產生系統
KR101788400B1 (ko) 2015-07-24 2017-10-20 한국과학기술원 평면형 광파 회로 기반의 집적 광학 칩
WO2017018596A1 (ko) * 2015-07-24 2017-02-02 한국과학기술원 평면형 광파 회로 기반의 집적 광학 칩
FR3050289B1 (fr) * 2016-04-13 2018-04-06 Centre National De La Recherche Scientifique - Cnrs - Dispositif de generation d'un faisceau de photons de longueurs d'onde definissant un supercontinuum sensiblement continu
DE102017213706A1 (de) * 2017-08-07 2019-02-07 Robert Bosch Gmbh LiDAR-System
ES2968458T3 (es) * 2019-04-25 2024-05-09 Fyla Laser S L Un sistema y método de configuración de todo fibras para generar una emisión pulsada de supercontinuo temporalmente coherente

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005071483A1 (en) * 2004-01-23 2005-08-04 Koheras A/S Method of generating supercontinuum optical radiation, supercontinuum optical radiation source, and use thereof

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5311525A (en) * 1992-03-31 1994-05-10 The Board Of Trustees Of The Leland Stanford University Nonlinear optical coupler using a doped optical waveguide
JP3558499B2 (ja) * 1996-07-24 2004-08-25 住友電気工業株式会社 光ファイバ、光源装置及びシステム
JPH11119269A (ja) * 1997-10-09 1999-04-30 Furukawa Electric Co Ltd:The 波長広帯域連続光発生装置
JP3390755B2 (ja) * 1998-09-29 2003-03-31 科学技術振興事業団 波長可変短パルス光発生装置及び方法
US6097870A (en) * 1999-05-17 2000-08-01 Lucent Technologies Inc. Article utilizing optical waveguides with anomalous dispersion at vis-nir wavelenghts
JP2002040497A (ja) * 2000-07-31 2002-02-06 Kddi Submarine Cable Systems Inc 広帯域ｃｗ光源および広帯域ラマン増幅システム
JP5196459B2 (ja) * 2001-07-31 2013-05-15 独立行政法人科学技術振興機構 広帯域波長可変レーザ光発生装置
WO2005012996A1 (ja) * 2003-08-01 2005-02-10 Nippon Telegraph And Telephone Corporation レーザ光源
GB0329629D0 (en) * 2003-12-22 2004-01-28 Blazephotonics Ltd A light source
US7280567B2 (en) * 2004-03-12 2007-10-09 Pavilion Integration Corporation High-power red, orange, green, blue (ROGB) fiber lasers and applications thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005071483A1 (en) * 2004-01-23 2005-08-04 Koheras A/S Method of generating supercontinuum optical radiation, supercontinuum optical radiation source, and use thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116687350A (zh) * 2023-06-07 2023-09-05 中国医学科学院北京协和医院 利用光谱层析技术实现色素类疾病的边界查找方法
CN116687350B (zh) * 2023-06-07 2023-11-21 中国医学科学院北京协和医院 利用光谱层析技术实现色素类疾病的边界查找方法

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ATE413627T1 (de) 2008-11-15
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WO2005098527A1 (fr) 2005-10-20
JP4898657B2 (ja) 2012-03-21
KR20070085077A (ko) 2007-08-27
US7768691B2 (en) 2010-08-03
US20070216989A1 (en) 2007-09-20
FR2867574B1 (fr) 2006-10-06
DE602005010835D1 (de) 2008-12-18
CN100418003C (zh) 2008-09-10
ES2317227T3 (es) 2009-04-16
CN1930518A (zh) 2007-03-14
EP1723466A1 (de) 2006-11-22

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